排灌机械工程学报
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Journal of Drainage and Irrigation Machinery Engin  2019, Vol. 37 Issue (4): 313-318    DOI: 10.3969/j.issn.1674-8530.17.0015
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Numerical simulation of flow-induced vibration of double-suction centrifugal pump as turbine
LUO Bo,WANG Chunlin*,XIA Yong,YE Jian,YANG Xiaoyong
School of Energy and Power Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
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Abstract A double suction centrifugal pump was chosen to the research objective to analyze the unsteady pressure fluctuations. Based on the finite element method, the forced vibration response calculations were completed based on the modal of the pump case for the different fluid pressures on the internal face, when the double suction pump running as a turbine and running as a pump. It was found that the interaction between the impeller and the tongue caused the unsteady characteristics near the tongue. In addition, the pressure fluctuation was mainly affected by the low frequency wave,and the response velocity was concentrated in the frequency of rotation, blade passing frequency and harmonic frequency due to impeller rotation and pressure fluctuation characteristics. As the third frequency 880083 Hz and the frequency of 3 BPF 884.991 Hz was close, which caused the resonance phenomenon. It reveals the change rule of the response velocity of the vibration of the pump case and provides the reference for the further research of reduction of vibration and noise.
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Articles by authors
LUO Bo
WANG Chun-Lin-*
XIA Yong
YE Jian
YANG Xiao-Yong
Key wordsdouble suction centrifugal pump   finite element method   calculation for vibration mode   pump as turbine   forced vibration     
Received: 2017-01-18;
Cite this article:   
LUO Bo,WANG Chun-Lin-*,XIA Yong et al. Numerical simulation of flow-induced vibration of double-suction centrifugal pump as turbine[J]. Journal of Drainage and Irrigation Machinery Engin, 2019, 37(4): 313-318.
 
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